Gage for rip-saws



(No Model.) I

T. A. MQD'ONALD.

GAGE FOR RIP SAWS.

Patented FebSZO, 1883.

INVENTOR WITNESSES ATTORNEY S.

u. PETERS. Phclo-Lllhugnphor, wuinn m no UNITED STATES ATENT OFF CE.

THEODORE A. MCDONALD, OF NEW ALBANY, INDIANA.

GAGE FOR RI P-SAWS.

SPECIFICATION forming part of Letters Patent No. 272,734, dated February20, 1883. I Application filed November 28, 1882. (No model.)

To all whom it may concern:

"Be it known that I, THEODORE A. MoDoN- ALD, of New Albany, in thecounty of Floyd .and State of Indiana, have invented a new and ImprovedGage for Rip-Saws, of which the following is a full, clear, and exactdescription.

The object of my invention is to provide a new and improved gage forcircular saws for Io ripping boards or planks into strips, which gagecan easily and rapidly be adjusted.

The invention consists in a gage-bar attached by means of parallelpivoted bars with a fixed bar and by a link with alongitudinally-sliding [5 bar, whereby if the sliding bar is moved inthe direction of its length the gage-bar will be moved toward or fromthe saw, the distance the gage-bar is moved being indicated by agraduated bar attached to the gage-bar and crossing the sliding bar formoving the gage-bar.

The invention also consists in parts and combinations of the same, aswill be fully set forth and described hereinafter.

2 Reference is to be had to the accompanying drawings, forming part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1 is a plan view of my improved saw- 0 gage. Fig. 2 is a longitudnal elevation 'of the same. Fig. 3 is a cross-sectional elevation of thesame on the line :v m, Fig. 1. v

The sliding gage-bar Arests on the table B, and is connected by means oftwo pivoted parallel bars, 0, with a bar, D, fixed to the table Bparallel with the gage-bar A. A bar, E, is held parallel with thegage-bar by guide-clips F F, fixed on the table, of which guide-clips Fis provided with a binding-screw, G. The

0 bar E can slide in the direction of its length, and is provided atoneend with a handle, H, for moving it. The bar E is connected with thegage-bar A by a link, J, pivoted to both. A graduated bar, K, or rule isattached to one 5 end of the gage-bar A, at right angles to the same,and the free end of the said graduated bar passes under a bar, L,secured on the bar E, whereby a longitudinal horizontal guideslat forthe free end of the graduated bar will be formed between the bar L andthe bar E.

The operation is as follows: By drawing the bar E in the direction ofthe arrow at the gagebar A will be moved from the saw M, the distancethe gage-bar has been moved being shown by the graduated bar K, whichpasses a greater or less distance through the slot formed between thebars -E and L. By moving the bar E in the inverse direction of the arrowa the saw-gage will be moved toward the saw M. By means of the graduatedbar K the saw-gage can be adjusted very accurately in the desiredposition. The saw-gage is locked in position by locking the bar E inposition by means of the screw G.

Having thus described my invention, what I 6 claim as new, and desire tosecure by Letters Patent, is-- 1. In a saw-gage, the combination, withthe sliding gage-bar A, the parallel bars 0, and the fixed bar D, of thesliding bar E, the link J, attached to the same and to the gage-bar, andof the graduated bar K, attached to the end of the gage-bar A, at rightangles to the same, substantially as herein shown and described, and forthe purpose set forth. 7 5

2. In a saw-gage, the combination, with the sliding gage-bar A, theparallel bars 0, and the fixed bar D, of rhesliding bar E, the bar L onthe same, the link J, and the graduated bar K, attached to the end ofthe gage-bar and passing between the bars E and L, substantially asherein shown and described, and for the purpose set forth.

3. In a saw-gage, the combination, with the sliding gagebar A, theparallel bars 0, and the fixed bar D, of the sliding bar E, the link L,the graduated bar K, the guide-clips F F, and the binding-screw G,substantially as herein shown and described, and for the purpose setforth. 9o

4. In a saw-gage, the combination, with the sliding gage-bar A, theparallel bars 0, and the fixed bar D, of the sliding bar E, having ahandle, H, the link L, the graduated bar K, the guide-clips F F, and thebinding-screw G, 3 substantially as herein shown and described, and forthe purpose set forth.

THEODORE A. MCDONALD.

